Suppose A and B are 4x4 matrices such that detA=-2 and detB=3 , find det [ (A3)det(B-1 ) ] I dont understand how to find det(detB-1) . What is the property for this?

Suppose A and B are 4x4 matrices such that detA=-2 and detB=3 , find det [ (A3)det(B-1 ) ] I dont understand how to find det(detB-1) . What is the property for this?

Martha invested a total of $48,000 in two different funds. One fund earned 10.5% interest and the other earned 12% in one year. After that year her account showed $5520 in interest. How much did she...

Geiger had a total of twenty eight $5 and $10 bills. If the total amount of money in his pocket is $180 how many of each bill did he have?

A= [ 2 -1 4 3 ] [ 2 1 0 1 ] [ 3 -4 1 2 ] [ 1 2 3 -1]

ABCT DBAT C= ABT My answer is (CT)-1B-1 BT C-1 (AT)-1 B-1

CT B-1 A2 BAC-1 DA-2 BT C-2 = CT My answer is : D= BA-2 B-1 A-1 CA2 (BT)-1 C2

A= [ 4 a-b 6] [ 2 3 b+c ] [ a-b+c 5 -2] What I dont imderstand is how you get this...

A= [2 -1 4] [ 3 1 -1] [ 4 2 1 ] B= [ 2 -1 4 ] [ 3 1 -1 ] [ 0 4 -7 ] Please explain me the steps. I dont understand what I have to do.

Simplify ( 2AC-1)-1 (AC-1) (AC-1)-1 AD-1 First off, Im not even sure what the topic of this question is. In my book , it just " simplify" so im having a hard time finding...

(2AT + 3T)-1 = [-4 3 ] [ 1 -1 ] Please show me steps. I dont understand how to undo the...

x+y+z=1 2x+2y+2z=2 x+y+z=0 Im not sure if its infinite or no solution

Let A be any mxn matrix and let 0 be the mxn matrix each of whose entries is zero . Show that if kA=0 , then k=0 or A=0. I am very lost ! Please help me show this because I think...

x+3y-2z=1 x+7y-4z=7 2x+4y+(a^2-28)z=a+4 I really have no idea what to do.Please show me steps

Given a 3 × 3 matrix B with real entries, suppose that the system of linear equations determined by B(x1 x2 x3) = (0 1 1) (they should be column matrices.) has infinitely many solutions...

Lets say I have this table, X y 2 10 4 6 6 2 8 ...

Consider the vectors u = x2+ 2x + 3 , v = 2x2 + 4x + 5 in R[x]. Decide if w = 2x2 + 4x + 5 is in the span of u and v.

determine if {A ∈ M3x3 (R) : Tr(A) = 0 } is a subspace of M3x3 (R)

by checking closure under the zero vector, closure under addition and closure under scalar multiplication; investigate if W = { (w1, w2, w3) ∈ R3 : 6w1 - 5w2 + 4w3 = 0 } is...

1. Write a function f(x) that represent a gym membership cost of $20 per month for x months. 2. Explain how a fee increase of 25% can be represented for the gym membership. Use g(x)...

Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. On the y-axis of this graph it is numbered 50-300, counting by...

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